Zviga zvinokodzera munyikaflangeyakajairwa "GB/T9124-2010 Technical Conditions yeSimbi Pipe Flanges":

3.2.1 Kune maflange ane mazita ekumanikidzwa kwePN2.5-PN16 Class150, low carbon steel, uye austenitic stainless steel forgings inobvumirwa kuva Class I forgings (kuoma kunoedzwa chidimbu nechidimbu).

3.2.2 Kana mamiriro anotevera akazadzikiswa, mafogi emaflange achasangana nezvinodiwa zveKirasi III kana pamusoro pefogi (sampling tensile inspection uye ultrasonic testing one by one):

1. Forgings for flanges with nominal pressures ≥PN100 uye ≥Class600;

2. Chromium-molybdenum simbi forgings for flanges ine mazita ekudzvinyirira ≥PN63 uye ≥Class300;

3. Ferrite forgings ye flanges ine zita rekumanikidza ≥ PN25 uye Kirasi ≥ 300 uye tembiricha yekushandisa ≤ -20 ° C.

3.2.3 Mamwe maFlange forging anofanirwa kuenderana nezvinodiwa zveGrade II kana pamusoro pefogi (spot inspection and drawing).